1. If you are minimally disciplined, and minimally clean your Stoner designed rifle with motor oil and a toothbrush every 500-750 rounds, you will probably never have an issue.

2. If you are not at all disciplined, are a superstitious, illiterate peasant, and think that Uncle Joe, Uncle Ho, and Uncle Mao are the bee's knee's, you should have an AK, and never have to worry about Direct Impingement vs. Short Stroke Gas system in an AR / M16/M-4 platform.

Drop in gas piston conversion kit installs in only five minutes and improves the reliability and function of your AR 15 by eliminating fouling caused by gas venting into receiver. Rifle runs cooler, with less frequent need for cleaning and less wear on carrier and bolt resulting in longer service life from these critical parts. The unique, kidney shaped cross section of the piston and piston chamber provides extra mass and surface area to evenly spread out gas pressure and reduce felt recoil, allowing you to stay on target for rapid follow up shots. Installs in minutes on both semi or full autoburst rifles with a barrel O.D. of .875 or less. No need to remove gas blocksight Mfg Osprey Defense SPECS Steel, black oxide finish. Handguard Reinforced polymer composite, black. Kit includes preassembled piston assembly, bolt carrier, handguard, and instructions.

Drop in gas piston conversion kit installs in only five minutes and improves the reliability and function of your AR 15 by eliminating fouling caused by gas venting into receiver. Rifle runs cooler, with less frequent need for cleaning and less wear on carrier and bolt resulting in longer service life from these critical parts. The unique, kidney shaped cross section of the piston and piston chamber provides extra mass and surface area to evenly spread out gas pressure and reduce felt recoil, allowing you to stay on target for rapid follow up shots. Installs in minutes on both semi or full autoburst rifles with a barrel O.D. of .875 or less. No need to remove gas blocksight Mfg Osprey Defense SPECS Steel, black oxide finish. Handguard Reinforced polymer composite, black. Kit includes preassembled piston assembly, bolt carrier, handguard, and instructions.

Which ad/site this come from? Now if I can only remember where I've read this verbatim before......

"To show you how radical I am, I want carjackers dead. I want rapists dead. I want burglars dead. I want child molesters dead. I want the bad guys dead. No court case. No parole. No early release. I want 'em dead. Get a gun and when they attack you, shoot 'em."
Ted Nugent - speaking at the NRA convention April 17, 2005

Thanks for the info, I didn't really see where it made two shits. I've put ??? # of rounds through my bushmaster and 0 issues in stock configuration. Definatly sounds like "an answer in search of a question" to me too. I'll put my bucks toward anouther gun or ammo.

1. If you are minimally disciplined, and minimally clean your Stoner designed rifle with motor oil and a toothbrush every 500-750 rounds, you will probably never have an issue.

2. If you are not at all disciplined, are a superstitious, illiterate peasant, and think that Uncle Joe, Uncle Ho, and Uncle Mao are the bee's knee's, you should have an AK, and never have to worry about Direct Impingement vs. Short Stroke Gas system in an AR / M16/M-4 platform.